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WorksheetsWeld distortion and rectification
Total questions: 23
Worksheet time: 12mins
What type of distortion is shown in the picture?
Angular distortion
Longitudinal distortion
Longitudinal shrinkage
Buckling distortion
What causes distortion?
Heating
Cooling
Uneven expansion & contraction
Poor quality materials
Which of the following pictures shows longitudinal shrinkage?
What type of distortion is shown opposite?
Longitudinal distortion/bowing
Angular distortion
Longitudinal shrinkage
Which of the following affect distortion?
Amount of restraint
Welding procedure
Parent metal properties
Part fit up
All of the above
Which of the following distortion control methods is shown in the picture?
Pre-bending
Clamping
Pre-setting
Planishing
Which of the following pictures shows strongbacks?
What is the advantages of strong backs with wedges (show) over strongbacks?
They are cheaper and simpler?
they are simpler to fit?
They are faster to fit?
They allow transverse shrinkage greatly reducing the risk of cracking compared with fully welded strong-backs.
Which of the following is a type of distortion rectification?
Pre-bending
Clamping
mechanical straightening/pressing
Weld sequencing
Which of the following distortion rectifications would be suitable for fixing buckling in a thin sheet metal box
Pressing
Hammering
Spot heating
Line heating
Line heating is commonly used to fix which type of distortion?
Buckling
Longitudinal
Traverse
Angular
Which type of distortion elimination method is represented opposite?
Weld sequencing
Elimination of welds
Pre-setting
None of the above
True or false. The closer a weld is positioned to the neutral axis of a fabrication, the lower the leverage effect of the shrinkage forces and the smaller the final distortion
True
False
Reducing the amount of weld metal needed for a joint......
Reduces the amount of distortion
Reduces the cost of the joint
Both of the above
None of the above
Intermittent welding...........
Reduces distortion over fully welding
Reduces cost over fully welding
Both of the above
None of the above
True or false. Weld chills are heat sinks connected to the joint being welded to allow heat to be dissipated more quickly.
True
False
The photo opposite shows which type of welding technique
Weld sequencing
Weld tacking
Back-step welding
Skip welding
Two welders welding opposite sides of a joint at the same time is an example of.........
Weld sequencing
Cost effective welding
None of the above
The photo opposite shows
tack welding
Balanced welding
Skip welding
Intermittent welding
Which of the following are examples of restraint?
Clamping
Jigs
Back to back assembly
All of the above
None of the above
True or false. Peening is the process of working a metal's surface to improve its material properties ans is usually done mechanically by hammer blows ect.
True
False
True or false. Planishing flattens out weld by mechanical means either by hammering or rolling.
True
False
True or false. Heat treatment can be used to relieve stresses from distortion?
True
False
